Her birth occurs in Royal Hospital in Ashby-de-la-Zouch, Leicestershire, England.
Her mother is Pauline Sugden-Mole (1944) and her father is George Mole.
George's father Albert (Adrian's middle name) died before the series begins.
In Adrian Mole and the Weapons of Mass Destruction, she has a very complicated boyfriend, to whom she gives money for drugs and drink.
In Adrian Mole: The Cappuccino Years, Rosie becomes pregnant by her boyfriend Aaron Michaelwhite.